Orange County
Since opening our Orange County office in 2017, we’ve embedded ourselves in the heart of one of California’s most dynamic and fast-growing regions. Based in Irvine, we work closely with our teams in Los Angeles and San Diego to serve a wide spectrum of clients—from Fortune 500 corporations to local institutions—across sectors like higher education, aviation, cultural and performing arts, commercial, life sciences, and civic infrastructure.
Clients & Projects
Our deep relationships with Orange County architects, developers, and contractors allow us to deliver high-performance building systems tailored to local needs. We’ve contributed engineering design and consulting services to some of the area’s most iconic and technically intricate projects. From utility infrastructure and central plants to performing arts centers and advanced lab facilities, our team thrives on complex challenges and precise execution. And because of our extensive regional knowledge and experience, we are able to effectively address the unique demands of the area’s climate, codes, and client expectations in our projects.
All PROJECTS
Discover our Orange County office through the projects we’ve delivered and the landmarks that define the region. It’s a snapshot of who we are, what we do, and where we work.
Culture
Irvine and Orange County offer the perfect balance of innovation, natural beauty, and quality of life, attracting both talent and investment. We’re proud to be a part of this vibrant community, and we support its future by participating in local philanthropic initiatives such as the UC Irvine Anti-Cancer Challenge and Cycling Event, Orange County Coastkeeper, and the United Way Giving Campaign.
Latest Insights
- Syska Hennessy’s 2025 Corporate Sustainability Report is Here
- Syska Hennessy Promotes Seven Senior Staff Members
- In Memoriam: Michael Adebanjo (1969 – 2025)
- Connections – Summer 2025 Issue
- Syska Hennessy Opens Office in Riyadh, Saudi Arabia To Accommodate Regional Growth
